How much higher would the nail be in the tree?

Question

When Rohit was six years old he hammered a nail into his favorite tree to mark his height.
Five years later at age eleven , Rohit returned to see how much higher the nail was.
If the tree grew by ten inches each year, how much higher would the nail be in the tree?

Answer 1

The nail would be in the same place. Because, a tree doesn't grow from bottom and it only grows in the top. In bottom it only increase its width.

Answer 2

Rohit height at age of 5 + 50 inches...............so simple